Capital Gains Tax Hits Inherited Homes Sold Before Partition — TCAS Ruling Overturns Supreme Court Precedent and Backs the Tax Authority
The Tribunal Central Administrativo Sul reinstated a €71,000 capital gains bill on Lisbon apartments sold from an undivided inheritance, breaking with a June 2025 Supremo precedent.
A February ruling from Portugal's Tribunal Central Administrativo Sul (TCAS) has quietly rewritten the tax rulebook for inherited property — and it directly contradicts a Supremo Tribunal Administrativo (STA) precedent handed down only ten months earlier. The decision means that when heirs sell a specific home from an undivided estate before formal partition, the Tax Authority can now charge capital gains tax on the transaction.
The case turned on two apartments in Lisbon sold in 2017 by the heirs of an undivided inheritance. The Autoridade Tributária assessed roughly €71,000 in IRS capital gains. A lower court had annulled the assessment, siding with the heirs. The TCAS overturned that annulment on 26 February 2026 and reinstated the tax bill.
The Legal Distinction the Court Drew
The TCAS did not reject capital gains taxation on all inheritance-linked sales. Instead, it drew a sharp line between two kinds of transaction:
- Selling a quinhão hereditário — an abstract share or quota in the undivided estate as a whole — does not trigger IRS capital gains.
- Selling a specific, identified immovable asset belonging to that same undivided estate does trigger capital gains, because the operation has “the typical legal effect of a property purchase and sale.”
The court told tax assessors to examine “the content of the public deed” to decide which scenario applies. In practice, most inheritance sales are of specific homes, not abstract quotas.
Why This Reverses a Precedent
In June 2025, the Supremo Tribunal Administrativo ruled the other way: capital gains could not be applied to sales of property held in undivided inheritance. Tax practitioners treated the STA decision as settling the matter. The TCAS ruling now reopens it.
The two courts sit at different levels of the administrative hierarchy, and the STA decision technically carries higher authority. But the TCAS ruling will bind first-instance tax disputes until another STA case either confirms or overrides the new interpretation — and the Tax Authority has every incentive to keep assessing under the TCAS reading in the meantime.
Paula Franco, head of the Ordem dos Contabilistas Certificados, and several tax lawyers cited by Portuguese media have criticised the new ruling as legally incoherent: two authoritative courts now hold contradictory positions on the same tax treatment.
Who Is Affected
The ruling lands on a large, quietly transacting market. Portugal has roughly 500,000 urban properties and more than 3 million rural plots tied up in undivided inheritances, according to government figures cited in the Ministry of Justice’s own reform package. Many of these estates pass between siblings or cousins who never complete formal partition at the Conservatória, then sell the house years or decades after a parent’s death.
Under the TCAS reading, each of those sales is now presumptively subject to capital gains tax, computed on the difference between the sale price and the acquisition value for the original owner — often a very small historic figure that produces a very large taxable gain.
The Reform Wrinkle
The ruling collides with a separate government push. Earlier this month, Justice Minister Rita Alarcão Júdice sent Parliament a bill that would cut the acceptance deadline for inheritances from ten years to two, and allow a single heir to force the sale of a deadlocked property. The stated aim is to unlock gridlocked housing stock. But accelerating partition and sale only makes the tax exposure sharper: more heirs will be pushed into sales that, under the TCAS doctrine, will now carry a capital gains bill.
For expats who have inherited Portuguese property, the practical advice has changed overnight. Selling the physical home before partition is no longer a clean workaround. A sale of the quinhão itself — the abstract inheritance share — remains tax-free under the ruling, but is far harder to structure and rarely accepted by buyers. Tax advice before signing any public deed is now non-optional.
Further guidance is likely to come from the Tax Authority in the coming weeks, as it realigns assessment practice with the TCAS decision pending any higher-court intervention.
